The Grammy and Golden Globe winner poured her heart out while performing her Oscar-nominated song "Til It Happens To You" from "The Hunting Ground" — a song about sexual assault — on the piano. Lady Gaga's emotional rendition was accompanied by an incredible statement of solidarity, as she was surrounded by dozens of sexual assault survivors on stage. Several of the men and women had messages on their arms for their alleged attackers, ranging from "Survivor" to "Not Your Fault."

It was a moving display that brought the audience to their feet, including Best Supporting Actress nominees Rachel McAdams and Kate Winslet, who applauded after the performance with tears in their eyes.

But it was Best Actress winner Brie Larson who took her gratitude and appreciation of this powerful message even further. Larson was captured on camera hugging each of the survivors as they left the stage.

Lady Gaga was introduced by U.S. Vice President Joe Biden, an advocate for the "It's On Us" campaign, a campus sexual assault prevention initiative.

Prior to her performance, Biden spoke to his commitment to this cause, saying, "We must and we can change the culture so that no abused woman or man... should ever feel they have to ask themselves, 'what did I do?'"